Shock-absorber.



L. GHANUDET & G. P. RIBIS.

SHOCK ABSORBER.

AIYPLIOATION FILED MAR. 25, 1910.

997,370, Patented July 11,1911.

UNITED TATES PATENT OFFICE.

LOUIS CHANUDET A ND GEORGES IROSPER'RIIBIS OE NEUILLY-SUR-SEINE, FRANCE.

To all whom it may concern:

'Be it known that we, LoUIs CHANUDET and GEORGES PRosrER RIBIS, citizens of the Republic. of France and residents of l1 Avenue de la Rvolte,Neuilly-sur Se1ne,'=

A France, have invented a Shock-Absorber, of

which the following is a s 'ecification;

. The present invention as for its-object provide a shock' absorber wherein the spring remains absolutel from its position of equi ibrium in one direction or the other, the braking, eflect taking place only during its return to a position of equilibrium with an energy proportional to the degree of flexion, small oscillations remaining practically unaffected by-the-brak-p the accompanying drawin s.

Other objects and advantages of the invention will be apparent from the following description when taken in connection; with The inventlon consistsin the' novel con- 'struction, arrangement and combination of parts .as hereinafter fully described, illustrated in the drawing and pointed out. inthe appended claims.

In the drawing we showthe invention by a sectional elevatlon'.

'plston e, movable in the oscillating cylinder? f, pivoted at g in the casing; A valve h The bent lever a, pivoted two, to the easing 0, ispivotally connected by stud d, to aopening into t e cylinder puts the latter 1 into communication-through its base with sponds'to the normal load ,of the and it will be seen; that the the axle in eith'er direction from this posithe casing 0', On' the other hand, a bushing i, with a small opening of predetermined size gives permanent communication be tween the cylinder and the'casing. The

casing is filledwith an appropriate liquid, as oi plug 9'. The lever'a', is connected 'to the J axle by a tubular connection is, Z, and rendered yieldingjin one direction only by spiral spri-n m. The position shown in the drawing, w erein' the three pivotal points '6, d, g, are in line or' substantially so, corre-r springs- |movements 0 tion produceth'e symmetrical displacement of the oscillating cylinder and correspond to the dotted line position seen in the draw- .--ing.' It therefore follows thatif the axle moves in an direction from its position of normal loa thepiston works easily, the

free to deviate thiscan be done by removing'the.

Specification of Letters Patent. Patented July 11, 1911. Application filed Hal-ch25, 1910. Serial No. 551,581.

liquid flowing freely into. the cylinder through valve h, while the liquid drawn in cannot flow out .or return to the casing exce t by the small opening 2', which thus 0 ers a great resistance to, the movement of the iston: e.= The limitation "of the over the yielding connection 10,1. 1

The connection of the lever a, with the piston e, could, obviously, be replaced by a loading of the tires naturally results from I the construction of cylinderarranged within saidcasing and pivotally connected therewith, a piston movably arranged in the cylinder, a lever pivotally connected-f with the easing and also with the piston, the-points ofarticulation of the lever with the casin a ndfpistonand the pivotal point of the cy inder being substantially in line-with each other under normal load of the vehicle, andmeans for plac ing the interior of the cylinder below the piston inpermanent communication and also In controlled communication with the interior of the casing.

, 2. A h k absorber for vehicles com ris-' a casing, ada tedfto contain a liquid, a

ing cy mder arrange ally connected with the casing'and also with load of the vehicle, said pistonhaving a within said-casing and' pivotally connected therewith, a iston-mo'vably arranged in thecylinder,:a ever pivot-'- the piston, the points-of. articulation of the". 11 Y lever with the casing and piston and the pivotal pointof' the cylinder being substan- -'tially'in line withfleach other'under normal Y rv small opening: to provide permanent c'om-' munication between the interior of the 'cylinder and the-{interior of the casing, and an upwardly-opening valve carriedby thee linder and providing separate but control ed communication between the interior of the cylinder and the interiora -of the casing.

l ifltest mony wherepi weafiix our signatures in presence offftwo witnesses..

' Louis CHANUDETQ I GEORGES PROSPER RIBIS.

Witnesses v uDmN B. MASON,

Eimom) LAEVUTNUIER. 

